Henry b



(No Model.)

H. vB. GARY. MUNKBY WRENCH.

Patented May 13, l1890.

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frm/ETTEN 7,7//44/7 wy UNITED STATES PATENT OFFICE.

HENRY B. CARY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO ALFRED IV. EAMES, OF SAME PLACE.

MONKEY-WRENCH.

SPECIFICATION forming part of Letters Patent No. 427,672, dated May 13, 1890.

Application iilerl July 9, 1889. Serial No. 316,911. (No model.)

To all whom, it may concern:

Be itknown that I, HENRY J5. CARY, acitizen of the United States, residing at Los Angeles,in the county of Los Angeles and State of California, have invented a new and useful Improvement in l\Ionkey-\Vrenches, of which the followingfis a full, clear, and exact description, reference being had to the aeeompanying drawings, forming part of this specification.

Figure l represents a vertical section of my improved wrench, showing the adjustinglever as closed. Fig. 2 is a similar View of the same with the adjusting-lever opened. Fig. 3 represents a transverse section of the same, taken at line X X of Fig. l, and shows the working-face o f the lower jaw and arm of the wrench. Fig. 4t is also a transverse section taken at line X X of Fig. l, and shows the face of the upper jaw of the wrench; and Fig. 5 is a transverse section taken at line X X of Fig. l.

My invention relates tothe combination, in a monkey-wrench, (the grip of the jaws of which will be tightened by the force applied to its handle while in use,) of a lever or eccentric, whereby the wrench can be employed as a vise for securely holding an article, as hereinafter set forth.

In the accompanying drawings, A denotes the handle, which is provided with a ledge X, to serve as a seat for the jaw-adjusting screw B, which screw is provided with a milled disk or ring Y, te aetuate it in the usual manner. "l

O denotes the wrench-arm that is secured to handle A, to which the iiXed jaw D is rigidly attached as a part thereof. The lower jaw E is formed with a rectangular opening for the arm C, which opening is larger longitudinally than the width of the arm which is passed through it, to permit said jaw to Oseillate transversely of the arm, and it is adjustable by means of the screw B, by which it may be moved toward or from the fixed jaw D in the usual manner. The enlarged y or extended opening through jaw E is indi- `in the jaw to act against the arm C and hold said jaw in the normal position respecting Athe arm C- and upper jaw D when not in use.

The hollow screw-shield F, attached at one end to the jaw E, is made fast at its opposite end to the collar G and is provided with a female serew-thread et' one or more spires or coils S only, in order to permit said jaw and the shield F to oseillate freely when the wrench isin use, the collar G being of suflicient size to admit of its necessary vibration or play up and .down en arm O as said jaw and the shield oseillate or move transversely t0 said arm.

A slot I (shown in Figs. l and 2, and in dotted lines in Fig. 3) is formed in the projecting outer end of jaw E, in which a lever His pivoted or hinged. Said lever, having an eccentric working end, will act against arm O when raised to the right angle, as shown in Fig. 2, and draw jaw E to the'position shown in said figure, and when said lever Il is thrown back to its parallel relation to arm O and releases the jaw the spiral spring J, acting against arm C, will force jaw E to resume its normal position, as represented in Fig. l. y

It is apparent thata curved spring attached to arni C, arranged to press against jaw E, and a simple cam or eeeentrically-pivoted milled wheel would serve as equivalents of the spiral spring J and lever II.

In using my improved monkey-wrench the handle A should be forced around toward the working ends of the jaws E D, so that the ren sistanee of the article embraced between them will act against the outwardly-beveled teeth W` of the jaw E and the inwardly-beveled teeth Z of jaw D, which will cause compresn sion of spring J and force said jaw toward arm C and cause it to approach slightly toward the upper jaw D, tightening their grip, and thereby preventing the article being acted upon from slipping or becoming elisiigured by the action of the wrench. Then it is desired to hold an article firmly-as, for instance, the head of a bolt-while a nut is to be tightened upon its opposite end, after closing the jaws E D upon such article by means 0f screw Il, the lever Il may be used to effect a positive elampingof the article, as in a vise.

lOO

It will therefore be seen that my improvement of the wrench enables it to be used effectively for the double purpose of e Wrench and a, vise.

Having described my invention, I claim and desire bo secure by Letters Patent- In a monkey-Wrench organized :is described, the oscillating jaw E, provided with im openinfr z' :L s rin0F J im ad'ustinfr-screw B and a h 7 b 7 b 7 fixed jaw D, in combination with au arm C ro and the eccentriedever H, pivoted 'in :L slot or recess formed 'in the proj eating' outer end of said j LW E, as and for the purpose specified.

HENRY B. CARY, I Witnesses:

N. J. J UDAH, H. P. K. PECK. 

